Improvement in thill-couplings



VA. C).l NELSON. mprovementin-Thil! Coupiing.

'Nn H8 383 Patented Aug. 22,1871.

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@40k-21W?. md5/611% v v UNITED STATES ALEXANDER O. NELSON, OF BOSTON,MASSACHUSETTS.

IMPROVEMENT IN THILL-COUPLINGS.

Specification forming part of Letters Patent No. 118,383, dated August22,1871.

To all whom fit may concern:

Be it known that I, ALEXANDER O. NELSON, of Boston, in the county ofSuffolk and State of Massachusetts, have invented anew and valuableImprovement in Thill-Couplings; and I do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation ofthe same, reference being had to the annexed drawing'making a p art of this specification, and to the letters and figures ofreference marked thereon.

Figure l of the drawing is a representation of a vertical longitudinalsection of my invention. Fig. 2 is a detached view. Fig. 3 is a topview.

This invention has relation to thill-couplings; and it consists in acombination of devices for that purpose; the object being to guardagainst rattling, by the peculiar use of a rubber block and aueccentric, and to protect the rubber.

The thill-iron A has iitted Within its eye au eccentric, a, having anopening, c', for the passage of the connecting-bolt b, both the openingand the bolt having one liat side, so that by turning the bolt theeccentric is turned with it. The rubber block d is iitted to thethill-iron, and for protection within the gua-rd d and the ears c and c.The bolt b has a square shoulder adapted to a square opening in the earc', to prevent the turning of the bolt and the eccentric when both arein place; but by removing the nut e and driving the bolt back to J[heneck e on the bolt, the bolt and eccentric may be turned, and the bolthaving its bearings in the ears c and c', the turning of the bolt andthe eccentric presses the thill-irou back more or less against therubber block, and thus rattling is prevented and the wear of the rubberblock compensated VVituesses:

W. J. KOWEAN, HENRY O. AUsTIN.

